TPS7A30
-3V 至 36V 输入电压、-200mA、超低噪声、高 PSRR、低压降线性稳压器
描述
The TPS7A30 series of devices are negative, high-voltage (–35 V), ultralow-noise (15.1 µVRMS, 72-dB PSRR) linear regulators that can source a maximum load of 200 mA. These linear regulators include a CMOS logic-level-compatible enable pin and capacitor-programmable soft-start function that allows for customized power-management schemes. Other features include built-in current limit and thermal shutdown protection to safeguard the device and system during fault conditions. The TPS7A30 family is designed using bipolar technology, and is ideal for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This design makes the device an excellent choice to power operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry. In addition, the TPS7A30 family of linear regulators is suitable for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversion, maximum system performance is provided in sensitive instrumentation, test and measurement, audio, and RF applications. For applications that require positive and negative high-performance rails, consider TI’s TPS7A49 family of positive high-voltage, ultralow-noise linear regulators.
特性
- Input Voltage Range: –3 V to –35 V
- Noise:
- 14 µVRMS (20 Hz to 20 kHz)
- 15.1 µVRMS (10 Hz to 100 kHz)
- Power-Supply Ripple Rejection:
- 72 dB (120 Hz)
- ≥ 55 dB (10 Hz to 700 kHz)
- Adjustable Output: –1.18 V to –33 V
- Maximum Output Current: 200 mA
- Dropout Voltage: 216 mV at 100 mA
- Stable With Ceramic Capacitors ≥ 2.2 µF
- CMOS Logic-Level-Compatible Enable Pin
- Built-In, Fixed, Current Limit and Thermal
Shutdown Protection - Packages: 8-Pin HVSSOP PowerPAD™ and
3-mm × 3-mm VSON - Operating Temperature Range:
–40°C to +125°C
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